Equal BER with successive interference cancellation DS-CDMA systems on AWGN and Ricean channels

Abstract

An interference cancellation scheme, based on successive cancellation with decided information bit feedback, is presented, and the performance analyzed in order to obtain the same bit error probability (BER) for each user, when channel estimation and power control are considered to be ideal. The analysis is carried out to obtain the same, optimal, performance on each channel. Furthermore, a possible approximation is introduced to develop an easy power list algorithm and is validated with numerical results. Some considerations both on receiver and transmitted total power gain with respect to the classical integration-and-dump receiver structure are reported.